Hoisting apparatus.



H. WALLES.

HOISTING APPARATUS.

APPLICATION FILED AUG. 23, 1913.

1,101,595, Patented June 30,1914.

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HERMAN WALLES, OF CHICAGO, ILLINOIS.

I'IOISTING APPARATUS.

To all whom it may concern Be it known that I, HERMAN VVAnLEs, a citizenof the United States, residing at Chicago, in the county of Cook andState of Illinois, have invented certain new and useful Improvements inHoisting Apparatus, of which the following is a specification.

This invention relates to apparatus for hoisting or lowering loads, andits object is to provide a simple and highly efficient apparatus bywhich heavy loads can very easily be lifted, a novel combination andarrangement of a winding drum and fall block being provided as will behereinafter described in detail and claimed.

In order that the invention may be better understood, reference is hadto the accompanying drawing, in which Figure 1 is a front elevation ofthe apparatus; Fig. 2 is a cross section on the line 2-2 of Fig. 1.

Referring specifically to the drawing 5 denotes a shaft carrying a drum6 and having its ends fitted with diametrically opposite crank handles7, whereby the drum is rotated, said drum being fast on the shaft. Theshaft is carried by a yoke 8 provided with a suspension hook 9. On theshaft, alongside the drum, are loosely mounted pulleys l0 and 11,respectively, the same being located at the respective ends of the drum.

At 12 is indicated a fall block having two pulleys 13 and 14,respectively, and carrying a hook 15 from which the load to be hoistedor lowered is suspended. The hoisting line 16 is made fast at one end tothe drum 6 so that it may be wound thereon or paid out when the drum isrotated. From the drum, the line extends to and around the pulley 13 andthence to and around the pulley 10, from which latter it extends to andaround the pulley 14, then to and around the pulley 11, from whichlatter it extends to Specification of Letters Patent.

Application filed August 28, 1913.

Patented June 30, 1914:.

Serial No. 787,152.

the fall block 12, and is made fast thereto, as indicated at 17.

In use, the device is suspended from a suitable support by means of thehook 9, and the load to be hoisted or lowered is attached to the fallblock 12 by means of its hook 15. Now, upon operating the drum 6 bymeans of the crank handles 7 to wind the line 16 on said drum, the fallblock is elevated, and upon paying out the line, the fall block islowered. As in a combination of pulleys, where one continuous rope isused, a load on the free end will balance a weight on the movable blockas many times as great as the load on the free end, as there are partsof the rope supporting the loadnot counting the free end, it will beevident that by the hereinbefore described arrangement of pulleys a pullof one pound, without considering the leverage obtained by the drum andthe crank handles, will lift a load of four pounds carried by the fallblock. In the present apparatus the end of the rope which is connectedto the drum may be considered the free end.

I claim:

A hoisting apparatus comprising a winding drum, a shaft carrying thedrum, a yoke carrying the shaft, said yoke having suspension means,pulleys loosely mounted on the shaft, at the respective ends of thedrum, a fall block having a pair of pulleys, and a hoisting line madefast at one end to the fall block and at the other end to the drum, saidline passing back and forth between the first and second-mentionedpulleys and around the same.

In testimony whereof I aflix my signature in presence of two witnesses.

HERMAN WALLES.

Witnesses S. J. LEHRER, H. G. BATOI-IELOR.

Copies of thls patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

